Brake-lining machine



March 11, 1930.

A; o. WlSTl 1,750,144

BRAKE LINING MACHINE Filed April 12. 1928 2 Sheets-Sheet l @NJQEREINQWISH March 11, 1930. A. o. WlSTl BRAKE LINING MACHINE Filed April 12-1928 2 Shoots-Sheet 2 gwumdo'c @NDBEW (9. Wasn Patented Mar. 11, 1930PATENT OFFICE ANDREW 0. WISTL, OE INDIANAPOLIS, INDIANA BRAKE-LINIHGMACHINE Application filed Aprn 12,

This invention relates to machines for relining brake shoes, clutchfaces, or the like, and one feature of the invention is the provision ofmeansoperated from a sing-le'source,

for trimming, removing from, and applying facings to brake bands andclutch faces.

A further feature of the invention isthe provision of means foradjusting the various elements of the device for obtaining accuracy inoperation.

A further feature of the invention is the provision of a plurality ofattachments and means for applying the same, whereby a multiplicity ofoperations may be performed on the one machine. t

A further feature of the invention is. the provision ofa-djustable'means for stripping the bands or the like from the tools,after the tool has been forced thru the same.

Other objects and advantages will be hereinafter more fully set forthand pointed out in the accompanying specification.

In the accompanying drawings which are made a part of this. application,

Figure 1 is a side elevation of'the machine,

partly in section, showing the manner of removing linings or facings andof putting holes thru the linings and trimming the linings in sections;

Fig. 2 is a front elevationof the machine,

partly in section, showing: one manner-:of supporting and applyingrivets;

Fig. 3 is. a top plan view of the: machine, partly in section;

Fig. 41 is: anenla-rge-d detail sectional side view thru the machine,showing another man ner of applying, andalso showing the means forremoving rivets;

' Fig- 5 is an enlarged detailv section as seen in the proximity oflines 55,Fig. 1;

Fig. 6 is a similar view as seen in the proximity of line 6--6, Fig. 1;and

Fig. 7 is a sectional view as seen in the proximity of line 77 Fig; 1;,and Fig. 8 is a detail view.

Referring to the drawings in which similar reference charactersdesignate corresponding parts thruout. the several views, the numeral 1indicates the frame of the machine, having screw or bolt receiving ears2 thereon, by

1928. Serial No, 269,467.

means of which it may be secured to a post, wall or other suchsupporting means. Theupper portion of the frame 1 is provided with ahead 3 and the lower portion with a based, one in line above the other.The head 3'is provided with vertical bores 5 and 6, thru which extendplungers 7 and 8, respectively, the upper end of the plunger 7 beingpivotally attached to one end of a link 9, while the upper end of theplunger 8 is pivotally at taohed to one end of a shearing blade 10. Theupper end of the link 9 is pivoted to an operating lever 11, which is inturn pivoted to a dual journal structure which extendsupwardly from thehead 3, and straddles said lever which is arranged in such manner thatwhen swung downwardly or upwardly the plunger 7 will be lowered orraised, by the toggle action of the link 9 with said lever.

The shearing blade 10 operates in a longi-- tu'dinal slot 12 in the head3, and the outer end thereof is pivotally mounted on a bolt 13 extendingtransversely thru the slot 12' and walls extending in dual manner fromthe head i 3', so that when the plunger 8 is lowered or raised, theblade 10 will swing on the bolt 13 andthe inner end thereof be loweredor raised in shearing action. In order to operate both plu'ngers fromthe lever 11, and simultaneously, said plungers are provided with racksof teeth 14 and 15, which engage coordinately with the meshed timedgears 16 and 17,. respectively, which are housed in adjoining cavities18 and 19 in thehead 3. The gears 16 and 17 are mounted upon shafts 20-and 21, which pass transversely thru the adjacent wall of the head 3 andthread into retaining blocks 22 and 23, said blocks entering the openends of the cavities 18 and 19, and being held against rotation byproviding them with flat faces 241 and 25 on the peripheries of theblocks,.which abut against each other. With this construction it will beseen that when the lever 11 is. operated to raise or lower the plunger7, the plunger 8 will be simultaneously raised and lowered by means ofsaid gears. Cooperating with the shearing blade 10 is a mate shearingplate 26, which is adjustably mounted on the face of the frame 1, incutting relation with the same. Clamping arms 37, which screws 27 holdthe plate in position on the frame, while adjusting screws 28 arethreaded thru the frame 1 and bear against the inner face of the platein opposition to the screws 27, for adjusting the plate to a suitablecutting angle and position on the side of the frame 1, with respect tothe blade 10. As the plate 26 cooperates with the blade 10 for cuttingand shearing the lining fabric 29, means is provided for adjusting saidblade with respect to the adjusted position of the plate and to this enda hollow exteriorly threaded sleeve 30 is threaded thru one wall of theframe 1 (see Fig. 5), and is screwed inwardly until the blade 10 isbrought into proper shearing relation with the plate 26, the end of thebolt 13 being held in alignment by having a sliding fit within thesleeve 30. After said sleeve has been properly adjusted, the bolt 13 isscrewed inwardly until the shoulder 31 thereof embraces the oppositeface of the blade 10. A locking bolt 32 which is threaded into the endof the bolt 13, enters in the sleeve 30 until the head 33 of the bolt 32bears against the end of the sleeve 30, thus locking said sleeve andbolt 31 against rotation with each other, but permitting them to berevolved and adjusted as a unit with said bolt, for quickly shifting theblade 10 laterall toward or away from the plate 26.

eretofore considerable time and labor has been required in removing oldvehicle brake linings and applying new ones, but with the present devicethis work may be expeditiously and accurately accomplished by providingthe proper bit and anvil for cooperation with the plungers 7 and 8. InFig. 1 a chisel 34 is shown attached to the plunger 7 used primarily forcutting rivets when an old lining is being removed from the brake band,while a punch 35 is shown attached to the plunger 8 and making rivetopenings thru the linin 29.

n Fig. 2 a combined rivet holder and riveting bit 36 is shown attachedto the plunger 7 the holder comprising a plurality of spring grip thehead of the rivet 38 and guide it thru the desired hole in the lining 29or other work. The holder 37 is slidably mounted on the bit 36, so thatwhen the rivet is forced downwardly to its limit, said holder will berestricted against complete downward movement by its contact with thework, and be thus released from the rivet. An expansion coil spring 39normally holds said spring arms in lowered position, being disposedaround the bit 36 above the connecting web of said arms.

In Fig. 4, a special form of riveting bit 40 is shown attached to theplunger 7, while the punch 35 attached to the plunger 8 is shown asremoving a rivet from a vehicle brake band and lining. In

'certain makes of brake bands a reinforcing rib 41 is formed thereon,

which projects into the path of the ordinary riveting bit, hence the bit40 is provided with a recess 42 in one face thereof within which saidrib clears and permits said bit to engage the rivet.

The riveting bit 40 may be constructed similar to the bit 36, with theexception of the recess 42, but in the present instance the bit 40 isconstructed to upset a tubular or other rivet 43, the spring arms 37being omitted, and the end of the rivet embracing the bit instead of thehead. When a rivet of this class is used a tubular holder 44 isprovided, consisting of a sleeve 45 slidably mounted on a rod 46, thelatter being removably secured to a head 47, which threads into thelower end of a bushing 48, which in turn threads thru an opening 49 inthe base 4. The sleeve 45 is normally held in extended position by meansof an expansion spring 50 surrounding the plunger between the end of thesleeve and the head 47, to provide a receptacle for the tubular or othersuch rivet 43, and gradually moves downwardly to expose the rivet as thebit 40 applies pressure to upset the end of same. A clinching anvil 51is conveniently formed on the end of the rod 46, to support the rivetagainst the thrust of the bit 40.

WVhen a split rivet is used, as shown in Fig. 2, a shank 52 is enteredin the upper end of the bushing 48, a shoulder 53 thereon limiting thedownward movement thereof. A clinching anvil 54 is also provided in theend of the sleeve 52 for upsetting or spreading the split ends of therivet.

Referring to Fig. 1 and Fig. 4, a bushing 55 is also threaded thru anopening 56 in the base 4 for receiving implements for cooperation withthe tools operated by the plunger 8, a die 57 being shown attachedthereto in Fig. 1 and a knockout sleeve 58 in Fig. 4. The bushings 48and 55 are adjustable thru the base 4 so that they may be positioned toreceive tools of varying heights and properly position the work forreceiving the punches and the like.

Pivotally mounted at one side of the frame 1 is a stripper plate 59having a pair of fingers at its outer end adapted to extend on oppositesides of the tool carried by the plunger 8, so that on the upward strokeof said plunger, the work will be stripped from the tool, but when saidplunger is utilized for other purposes than punching operations, or whenthe work is being mounted upon or removed from the machine, the stripperplate is swung out of the path of the plunger 8, as shown in Fig. 3.

The frame 1 may be provided with pockets 60 and holder 61 in which thevarious rivets and tools may be placed when not in use, so that theywill not become lost.

With this invention, the old brake lining may be removed and a new oneapplied without changing the tools in the machine, as the punching andrivet removing operation may be performed by the tools associated withone plunger, while the riveting operation may be performed with thetools associated with the other plunger. Likewise, the lining may be cutin proper lengths by the shearing mechanism, thus saving time and laboras well as having all the implements necessary for relining the brakebands, clutch faces and the like, assembled in one machine. A midpointof the rod 46 is slightly enlarged, forming a shoulder 62, and thesleeve 45 is correspondingly smaller in diameter at both its ends, thusforming shoulders 68, by which arrangement the lower shoulder 63 isbrought against the shoulder 62 by the action of the spring 50, when theapparatus is idle, said shoulders 63 serving to thus keep the sleeve 45from being pushed entirely off of the rod 46, in either direction.

Referring to Fig. 1, a flared anvil 64 is provided over the sleeve 48,being adjusted by the same for suitable working height in cutting rivetswith the chisel 34, as desired. The anvil 64 may be used, however, fordif ferent purposes in the somewhat universal use of the machine forwhich it is adapted. Thumb screws 65 are threaded transversely into theplungers 7 and 8 to afford a convenient means for retaining differentbits and tools in the same, and similar screws .66 are also provided inthe base 4 to lock the die 57 shank 52, and other implements, asdesired.

INhile the draftsman has found it convenient to show the rivet knockoutsleeve 58 in use, in Fig. 4, and the tubular rivet holder 44, in use inthe same view, it is understood that in the majority of instances it isnot necessary to make use of the plungers 7 and 8 simultaneously. Forexample, when the plunger 7 is used, the plunger 8 and the blade" 10ordinarily run idle, and conversely. That is to say, that said plungersand blade are intended for somewhat independent use in getting out thesame job of work. For example the rivet removing operation is carriedout by using the punch 35 in the plunger 8, with the sleeve 58 as shownin Fig. 4. A new lining is then cut off to the right length by means ofthe blade 10. Rivet receiving holes for the new lining could then bepunched by substituting the die 57 for the sleeve 58, as shown inFig. 1. The rivets could then be conveniently applied in such manner asshown in Fig. 2 and Fig. 4 by use of the plunger 7.

The stripper plate 59 is provided with a standard 67 which terminates inan abutting relation with a point of the frame 3, and in the strippingaction, said standard serves as a brace to save the stripper from unduestrain.

Fig. 8 is a detail view of the spring arms 37 as seen looking upwardunder same. Said spring arms are more than two in number and preferablythree being tensioned inward- 1y to grip the head of the rivet 38 atsubstantially equi-distant points and thus centralize the same inrespect to the anvil 54.

While the description and drawings illustrate ina general way certaininstrumentalities which may be employed incarrying the invention intoeffect, it is evident that many modifications may be made in the variousdetails, without departing from the scope of the appended claims, itbeing understood that the invention is not restricted to the particularexample herein described.

I claim as my invention:

1. In a machine for reliningbrakeshoes and the like, a frame structure;a pair of plungers; toolsattached to said plungers; a lever mechanismfor operating one of said plungers, and a pair of intermeshinggears foroperating the other plunger simultaneously with the lever operatedplunger.

2. In a machine for relining brake shoes and the like, a framestructure; a pair of plungers movably mounted on said frame; a leverarrangement for operating one of said plungers, gear means interposedbetween said plungers for operating the second plunger when the firstplunger is operated; a shearing mechanism pivoted at one end to saidframe; and means for operating said shearing mechanism from the gearoperated plunger. 1

3. In a machine for relining brake shoes or the like, a pair ofplungers; teeth on said plungers; a lever construction for operating oneof said plungers and a pair of intermesh ing gears interposed betweensaid plungers and cooperating with said teeth for causing the otherplunger to operate in unison with the lever operated plunger.

4. In amachine for relining brake shoes or the like; a pair of toolholding plungers; teeth on said plungers; a lever construction foroperating one of said plungers; a pair of intermeshing gears interposedbetween said plungers and engaging the teeth thereof for causing thesecond plunger to operate with the lever operated plunger; andadjustable means for retaining objects in position to be operated on bythe tools carried by said plungers.

5. In a machine for relining brake shoes or the like, a frame having ahead and a base each having a pair of openings, one opening of each pairbeing in the same horizontal plane with the other opening of the samepair whereby an object may be moved laterally from over one opening toposition over the other opening; plungers in the openings of the head;tools for cooperation with said plungers; means for operating bothplungers in unison; bushings carried in the openings in the base, toolsfor cooperation with said bushings and means for adjusting said bushings whereby the tools carried thereby may be adjusted with respect tothe tools carried by said plungers.

6. In a machine for relining brake shoes and the like, the combinationwith too] holding plungers, and means for operating the same, of ashearing blade pivoted at one end to one of said plungers; a shearingplate for cooperation with said blade; means for adjusting the relativeposition of said shearing plate; and means for adjusting said shearingblade with respect to the shearing plate.

7. The combination with amachine for relining brake bands and the like,of a shearing device comprising a shearing blade, means for pivotallyand adjustably attaching one end of the blade to parts of said machine;an operating mechanism for said machine, means for attaching theopposite end of said blade to said machine operating mechanism, wherebythe blade will be operated thru the operation of said mechanism; ashearing plate associated with said blade; and means for adjustablymounting said plate on said machine.

8. The combination with a machine for relining brake bands and the like,of a cutting blade pivoted at one end to said machine; a support forsaid cutting blade formed to straddle the pivoted portion of said bladeWith dually arranged bosses; a screw means threaded thru one of saidbosses and having a reduced end portion extending into the other boss; ashoulder formed on said screw end portion at the juncture of the reducedend ortion; a sleeve threaded into said other oss, and fitting over theend portion of said screw; and a screw threaded into the reduced end ofsaid screw, the head of which embraces said sleeve.

In testimony whereof, I have hereunto set my hand on this the 9th day ofApril, A. D.

ANDREW O. WISTI.

